Hi

Daft question - where exactly should an engine number on a Ford Crossflow 1.3 or 1.6 engine from a Mk2 Escort? Not the casting number on the side of the block but the individual engine number that would be on the V5c?

My reason for such a daft question is the engine that came with my project has no number I guess due to rebore and perhaps decking of the block. And the last time I popped my head under the bonnet of a RWD Crossflow powered Ford was my mate’s rough 1100 Mk1 Escort in the mid-1980s and we were trying to get it running better rather than looking at the engine number!

When I am asking about engines for sale when I ask folk if it has an engine number all I ever get is the block number ‘it’s a 711M’ which is great news but also want to know if it has an engine number so I can IVA and register the car. And I need to know to ask exactly where to look (little horizontal ledge near top of block, or on very top surface of the block or where?)

I guess I do need an original Ford engine number to IVA a Locost so I can prove age of the engine for what emissions rules it has to meet.

Cheers
Mike

[Edited on 12/2/22 by Mike Wood]

[Edited on 12/2/22 by Mike Wood]

Hi Mike,
It’s on the head mating face, exhaust side, adjacent to cylinder no 1.
They are quite often erased by decking of the block.

Thanks for the info - really helpful

Cheers
Mike

As above, it's probably been wiped off.

Burtons have the years and corresponding engine numbers on their site. Got any stamps?

Just a thought, Hope that it's an early number that you 'find' as pre a certain date, your emissions will be less at the IVA test

Thanks, that’s helpful. What might be a lucky date, before when?

Cheers
Mike

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Originally posted by Mike Wood
Thanks, that’s helpful. What might be a lucky date, before when?

Cheers
Mike

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Originally posted by gremlin1234
the magic dates are listed in the iva manual, but to summarize,

before aug '75, no metred test
then 'till aug '86 co 4.5%, hc 1200
then 'till before aug '92 co 3.5%, hc 1200.
after that it's co 0.2%, hc 200 and lambda .97-1.03

and progressively more stringent...
so dates before... aug '75, '86 and '92

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“Effective Date”
The “effective date” used to determine the criteria applicable is -
the date of manufacture of the vehicle, except for an “Amateur Built” vehicle, a “Vehicle manufactured using parts of a registered vehicle” or a “Rebuilt
vehicle” it shall be 1 January immediately preceding the date of manufacture of the vehicle’s engine if this is earlier.
If the “effective date” cannot be determined, it must be assumed to be on or after 1 August 1997.

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